JonathanD Posted April 6, 2007 Share Posted April 6, 2007 The myth busters are trying to make someone have a BM with sound. Its about to start on the Discovery Channel. Preview looks like it has about 18 18" speakers pointed at the guy and they are all moving about 2-3 inchs. I'll let you know what happens. Link to comment Share on other sites More sharing options...
JonathanD Posted April 6, 2007 Author Share Posted April 6, 2007 No poo. I doubt it could ever happen, but maybe it was because he was standing within 5 feet of the speakers. The people standing farther away seemed to be more affected that he was. Link to comment Share on other sites More sharing options...
Bottomgottem Posted April 6, 2007 Share Posted April 6, 2007 The Brown Note Thread [font:Arial Black] Personally, JonathanD, I choose to believe the myth! [/font] My whole trick is to keep the tune well out in front. If I play Tchaikovsky, I play his melodies and skip his spiritual struggle. ~Liberace Link to comment Share on other sites More sharing options...
Rocky McDougall Posted April 6, 2007 Share Posted April 6, 2007 Somepeople have a BM when they get run over by a truck. I guess a giant sound wave can do the same thing, Whatcha think? Rocky "Democracy is two wolves and a lamb, voting on what to eat for lunch. Liberty is a well-armed lamb, contesting the vote." Benjamin Franklin Link to comment Share on other sites More sharing options...
JonathanD Posted April 6, 2007 Author Share Posted April 6, 2007 Alright... so note me. I just got cable and I dont know what is or is not a rerun. Jonathan Link to comment Share on other sites More sharing options...
57pbass Posted April 6, 2007 Share Posted April 6, 2007 Law Enforcement has a weapon that when aimed at the criminal..it emits a low frequecy wave that instantly cramps up the persons stomach.. ... www.danielprine.com Link to comment Share on other sites More sharing options...
barticus Posted April 7, 2007 Share Posted April 7, 2007 Well, I build speakers, and I can tell you for certain, high SPLs at very low frequencies can do some very interesting things. I've been in vehicles loud enough to make you queasy, and even make it impossible to breathe. 160+dB is no joke. As for the "brown note", I'd say that it is entirely plausible, but it wouldn't necessarily be the same frequency for everyone, since it's essentially a function of sympathetic resonance, and whatever part of the body it is that relates to this function will have a different mass and density in each person, and therefore a different sympathetic resonance. There's also the issue of simple excursion capability. Let's say you have 18" subwoofers. Figuring an actual piston diameter of, say, 16", that gives you a cone area of 201 square inches. Say you have 18 of them, you have an effective cone area of 3618si. Now, let's say that each one woofer is capable of 25mm of travel in each direction. That's about the physical limit in a traditional speaker basket, since beyond that, things start colliding. A traditional basket can support as much as maybe 30mm, in reality, but an inch is 25.4mm, which makes the math easier, so humor me! That would give the array a peak-to-peak displacement capacity of 7,236 cubic inches, or 4.1875 cubic feet. I can also tell you from the size of those enclosures, that it's very highly unlikely that they are designed to yield truly impressive response below about 20Hz. Something like this, on the other hand, would probably be quite a bit more effective. It drives a 48" x 48" cone, with a FOOT of travel. That's 16 cubic feet of displacement. I believe the tested specs revealed an output of over 120db in free air, with NO enclosure, at 4 Hz. I have a feeling it might get the job done. http://betteraudio.com/parthenon.jpg This is a prototype of the Parthenon driver, made by Adire Audio. Link to comment Share on other sites More sharing options...
Nicklab Posted April 7, 2007 Share Posted April 7, 2007 I've definitely felt a little queasy after being near the front of a stage where there are some serious subs at work. But I've never felt that effect to such a degree that I need to drop a deuce. Obligatory Social Media Link "My concern is, and I have to, uh, check with my accountant, that this might bump me into a higher, uh, tax..." Link to comment Share on other sites More sharing options...
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